Special Issue 1, December 2009
Article Number: 12
Download [PDF

Recycling strategies of trade effluents of a textile processing industry based on physical, chemical and biological treatment in India
        
S. Singh, K.S. Bhullar, L.P. Singh, A. Bhardwaj, R. Sharma, and A. Sachdeva
Pages 64-66

Abstract— Most of the textiles dyeing units in India are using Activated Process (Aerobic Treatment Process), for removal of waste organic matter for dyeing effluents in order to reduce water pollution load. This method removes valuable organic matter also and the treated effluent cannot be recycled for dyeing as it contains residual colour. It requires chemicals which are very costly. Thus, the overall cost of this process of effluent treatment is high. In the present research study, an effort has been made to evaluate whether any improvement in the waste treatment of dyeing industry is possible through the use of Anaerobic Treatment Process. Firstly, detailed study of various processes related to Cotton & Acrylic dyeing was carried out. Subsequently dyeing effluent sampling and analysis was done for the identification of the pollutants, as pinpointing their concentrations are vital to the selection of proper treatment process. For this purpose dyeing effluents of different processes related 100% cotton dyeing were collected from the dyeing unit of Ludhiana, Punjab, India. The dyeing effluents were analyzed for pH, TSS, TDS, BOD, COD and colour in various Textile laboratories in India using sophisticated instruments. Decolorisation of Reactive Red Dye was checked and graphs were plotted on UV spectrophotometer. The discharge effluents (25-50%) were used for dyeing of cotton as well as acrylic material samples in Textile Processing Lab at Govt. Institute of Textile Chemistry & Knitting Technology, India along with fresh water and their fastness was assessed.

Keywords—Activated Process, Aerobic Treatment Process, textile dyeing, water pollution.